An investigation into the conduct of a Vermont State Police trooper has been transferred back over to the Attorney General's Office for official review, confirmed Assistant Attorney General John Treadwell on Tuesday.

The internal investigation began last week by the state police into trooper Eric Rademacher of the Rutland barracks. Rademacher is suspected to have driven under the influence.

Treadwell said he had asked the state police to do some follow-up investigation, and the agency returned more paperwork on the case Monday. The Attorney General's office will determine whether prosecution is appropriate.

Treadwell declined to comment on a timeline for the prosecution decision or any other facts of the case. Information has not been released as to whether Rademacher was allegedly under the influence of drugs or alcohol and if he was on or off duty.

State police spokesman Scott Waterman said Rademacher remains on paid administrative leave, on which he was placed March 2. Waterman declined further comment on the case.

Rademacher has been employed with the Vermont State Police since January 2013, the state police said last week. Waterman confirmed last week that Rademacher is paid a salary of $53,154 annually.

Col. Tom L'Esperance, director of the Vermont State Police, expressed last week his "extreme disappointment at the trooper's alleged actions."

"All Vermont State Troopers are expected to abide by the laws of this state, and are held to a higher standard than the public in the way that they conduct themselves," L'Esperance said in a statement.

Contact Elizabeth Murray at 651-4835 or emurray@freepressmedia.com. Follow her on Twitter at www.twitter.com/LizMurraySMC.